using radial field on per particle basis!!!

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Old 03 March 2010   #1
using radial field on per particle basis!!!

Hello Everyone,

I am back with a new query...lolz

I want to make some pieces of cloth fly in a stream.

so I made a curv flow and now i want that the particles should self collide...

So what i thought is to emit a radial field from each particle..

Here's what i did:

Create emitter,
Create radial field,
select particleshape and radial field,
went to Fields>Use selected as source of field,

but the particles dont collide...

I want the particles to move in a stream so i cant increase the magnitude way too high....
Old 03 March 2010   #2
Try it this way:
Select the particle then create the radial field - or just make sure the particle is using the radial field.
Then select the individual particles then Fields>Use selected.
Old 03 March 2010   #3
Thanks for replying, but it still does not collide;
Old 03 March 2010   #4
Just for purposes of diagnostics, try this:

create a polygon sphere
make it soft
select the particle and create a radial field
select the particles nodes particles and the radial field
do Fields>Use selected

To test if they are colliding, turn off conserve and set the magnitude of the field very high and the max distance to something that makes sense. The object could quickly become a new size.
Old 03 March 2010   #5
Turn on "Apply Per Vertex".
Old 03 March 2010   #6
Seems to work either way.
Old 03 March 2010   #7
Its still not working...m fed this.....
Old 03 March 2010   #8
Definitely turn on apply per vertex.

Last edited by ronviers : 03 March 2010 at 09:09 PM.
Old 03 March 2010   #9
turn on "apply per vertex" like cheese said. Play with max distance and i typically tend to have attenuation set to near 0 or zero.
Old 03 March 2010   #10
Also make sure the field is connected to the particle using the Dynamics relationship editor.
Old 03 March 2010   #11
ThankYou so much for replying but i am not able to get the particles to collide.. So i am attaching the file. If you get time, please check it.
Attached Files
File Type: zip test_radial (7.0 KB, 10 views)
Old 03 March 2010   #12
You setup is working, what exactly are you trying to achieve? How can your particles collide if their projection is away from each other anyway?

Last edited by Aikiman : 03 March 2010 at 03:06 AM.
Old 03 March 2010   #13

Well this is not what i want.

actually i need pieces of cloth that are flying in a stream...

i am attaching a pic take a look at it...

actually i want to show that pieces of cloth are coming from some place but they are not
spread everywhere in the environment but they are in a stream...

the picture shows they are moving from Point A to Point B..
So i want the particles to self collide...
Attached Images
File Type: jpg stream.jpg (47.1 KB, 17 views)
Old 03 March 2010   #14
Then I would use the curve flow effect so that your particles move from A to B or the volume curve field with the setup you already have. If you have nParticles that would be even better since that has inbuilt self collisions when turned on.
Old 03 March 2010   #15
I agree with akiman,
use nparticles for self-collision and for the stream use a volumeCurveField or a volumeAxisField depending on how your stream should look like. you can even turn trap inside on to keep the particles inside the volume. you could even use ncloth if you want or need deforming cloth pieces.

colliding particles with radial fields works in my experience only if you use max distance instead of a volume on the radialField. maya seems not to use the volume of a field if applied as a per vertex field. but that's just my experience. could be wrong here
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